Accelerator for internal-combustion engines



`une 1 1926.-

M. SCHLATTER ET AL ACCELERATOR FOR` INTERNAL COMBUSTION ENGINES Filed June 25, 192s 27,1%/ ,ow gclzlailer mz I Elmer L Llp/D.

Patented .lune 1, 1926.

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MOSES SCI'ILATTER- AND ELMER L. LIIPP, OF LOS ANGELES,` CALIFORNIA, ASSIG-NIRS, BY MESNE ASSGNJIENTS, '"I WILLAIVIS BROS. AIRCRAFT CORPORA'ILON, 0E SAN FRANCISCO, CALIFORNIA, A CORFORATION OF CALIFORNIA.

AOGELERATOR FOR INTERNAL-COMBUSTION ENGINES.y

Application filed. .Tune 25, 1923. Serial No. 647,550. A

This invention relates to means for opening and closing a throttle valve, and an object of the invention Vis to provide an appliance that is so constructed and arranged that it can be attached to an engine and connected to a throttle lever by any person capable of operating cotter pin pliers and a screw driver, and which when connected to an engine and throttle lever will be highly eliicient to perform its function.

An object of the invention is to Vprovide an appliance which, in addition to being easily attached to an engine and throttle lever, is also simple to operate, durable in constructionand neat in appearance.

An object of the invention is to providean appliance that can be operated "vith either hand or toot, each independently ot' the other.

Other objects are long lite and smooth operation and avoidance of severe strain upon the throttle mechanism.

Another object is tol provide an appliance that is especially adapted for use with the types of engine and carbureters installed in F ord cars; butwe do not limit its use to engines of any particular type or make.` v Another object is'to provide an appliance that can bev easily attached to Ford engines already in use on cars irrespective of whether the floor boards oit' the car are or are not broken. n Another object is to so construct and combinethe parts of the device, as an attachment, that when they same is installed, it will ybe stable, and the parts will be certain to maintain their operative relations.

The usual means employed in the Ford Vcar `for operating the carbureter butteriy valve consists in a rod connected at one end to the said valve arm and at'the other end to a rocker arm, which is iixed to the hand throttle control-rod that is oscillated on its axis by a hand lever, and this invention is broadly new, basic and pioneer in that we introduce in connection with the said valve and operatingrod, a rack, a slideway and a toothed segment or sector and means operable by a foot pedaland aspring to controlthe sector; the spring operating to normally hold the sector in position to lock the rack against longitudinal movement in the slideway; and the :toot operated pedal operating the sector to move the rack in the slideway. A

By this arrangement, when the foot pedal and its rack'are held in normal position by the spring, thehand operated control rod operating through the slideway will move both the slideway and the sector and will transmit motion to the said valve arm of kthe carbureter substantially the same as with the former connection between the rocker arm and the valve arm, and when the pedal isk operated, thus operating the rack, the valve arm willA be operated by its connecting rod irrespective of the position of the hand-operated control rod.

An object of this invention is to utilize the stock spring installed in Ford cars to support the hand operated throttle control rod; and this is eiected by a flat strip of metal bent into the form of a U and embracing the control rod at such position as to compress the spring by pressure from below, and said metal is pinched into riotional contact with the rod so as to maintain a greater tension on the sprinlg than is customary with kthe spring when the Ford machine is putout to the public. n

By this arrangement the additional weight of the rack, thetoothed segment and the slide, is supported; and the operative positions of the parts is stably maintained.

Other objects, advantages and features of invention may appear .from the accompanying drawing, the sub-joined detail description and the appended claims.`

The accompanyingl drawing illustrates the invention.

Figure l a plan view of an appliance constructed in accordance With this inven tion, and in place on an automobile, a portion of which is shown. v

Fig. 2 is a side elevation of the appliance as connected to a Eord automobile, the. engine and other parts of which are indicated by dotted lines.

Fig. Sis a ragmental edge view on a larger scale, of the slideway connected to the hand control rocker arm of ahand controlled carbureter throttle rod, a rack and a toothed segment, and also the carbureter throttle operating rod.

Fig. 4 is a fragmental view showing in plan the appliance as attached to a Ford automobile. n

Fig. 5 is a fragmental plan view in section on line m5, Fig. 3.

Fig. 6 is a section on line fr, Fig. 5.

Fig. 7 is a detail of the compressed stabilizing spring and the clip compressed upon the hand-control rod, a fragment of which is shown. v

Fig. 8 is a section on line w8, Fig. 7.

Fig. 9 is an enlarged detail ofthe universal joint connection between the segment rod and the pedal operated rock shaft.

The carb-ureter 0, and its throttle arm b are of common and well known construction and are not shown in detail.

The hand operated throttle control rod 1 is connected in the usual way with the hand throttle gasoline lever 2 as shown, and is i provided in the usual way with a rocker arm 3 which is oscillated by said rod 1 and is provided with a! bearing 4 to which, in the ordinary construction heretofore, there has been attached a carbureterconnecting rod, not shown in these drawings, but well known in the art.

` ter pin 6. Said journal pin 5 is connected to a slideway support 7 to which is fixed a rack housing and slideway composed of two angle irons, 8 and 9, spaced apart a distance equal to the thickness of the rack 10, and a toothed segment 11 which is in mesh with the segment and is pivotedby pivot 12 to the housingformed by the angle irons 8 and 9, and is connected by a rod 13 and a universal joint 14 with a crank 15 on a pedal rock shaft 16j that is journalled in the bearing 17 that is adapted to be attached to the engine, said bearing being carried by a mounting or bearing 18 fastened by screws 19 to the top 2O of the transmission case 21; said screws 19 taking the place of two of the usual screws for fastening such top on to the case.,

The pedal 22 is iiXed to the pedal rock shaft 16 and is adapted to rock said shaft and to thereby operate the connecting rod 13. f

The crank arm 15 of the pedal shaft is connected by a spring 23 to the mounting 18 to normally hold the segment 11 andthe pedal 22 retracted. A

The universal joint 14 simply comprises a block having two holes 2d and 25 at right angles to each other; said holes forming a bearing for the crank end 26 of the crank arm 15, which end is in parallelism with the crank shaft 16. The hole affords a bearing for the hook end 27 of the rod 13. Said hook end is bent at right angles to the main body of the rod 13 which is connected to the segment 11 by a second hook end 28.

1n Figs. 2 and Z the stabilizing spring 29- is shown compressed by a clip 3,0 which is simply a short piece of sheet metal bent Leer/,04o

onto the rod 1 to talre up and hold said spring at a tension sufiicient to support the weight of the slideway and sector. Said clip 30 is made of U shape and the bend of the U is of the same radius as the rod 1; and in applying the device, the spring is compressed away from the spring seat 3l on the rodV and the U is inserted between the spring :29 and the spring seat 31 and thus compresses the spring to support the rod with added tension to support the slideway and its adjuncts.

The sector is provided with end stops 33 vand 3d adapted to abut against the rack bar 10 to limit the stroke of such bar so that the force applied to thepedal will not apply excessive force to the throttle and will not jam or wrench the throttle mechanism.

1n practice the operator may use either the hand lever or the pedal or` may use both at the same time without any interference one with the other.

We claim: l

1. An accelerator comprising a. foot; lever;

a bearing for said lever; a throttlelever;

a floating housing; a rack bar in saidy housing; a rod having one end secured to Said rack bar; an adjustable connection between the other end of said rod and said throttle lever; a sector pivotally mounted in said housing and arranged to. engage and move said rack bar; a draw bar having one end pivotally connected to said sector; a pivotal connection between the other end of said draw bar and said foot lever; and a spring `for normally holding said foot lever in a predetermined position said spring having one end connected to said foot lever and the other end connected to said support.'Y

2. An accelerator comprising a foot lever and a hand lever, said foot lever connected to an engine and said hand lever mounted on a steering post of an automobile; a throttle lever adapted to open and close a throttle valve in an engine carbureter; a floating housing; a rack bar in said housing; a connection from said rack bar to said throttle lever; a sector in said housing arranged to engage and move said rack bar; a connection from'said sector to said foot lever; and a connectionA from said floating housing to said hand lever. A

8. An accelerator comprising a foot lever and a hand lever, said foot lever connected to an engine and said hand lever mounted on a steering post of an automobile; a throttle lever adapted to open and close a throttle valve in an engine carbureter; a floating housing; a rack bar in said housing; a connection from said rack bar to said throttle lever; a. sector in said housing arranged .to engage and move said raclr bar; a connection from said sector to said foot, lever; and, a connection from said floating housing to said hand lever.

4. The combination With a earbureter throttle, a hand lever throttle rod and the usual spring, for supporting,` such rod; of a rack slideway operably connected with the hand lever throttle rod; a throttle bar having a rack slidable in the slidevvay; means carried in the slideway and operable by the foot to operate the rack; and a clip adapted to he compressed around the hand lever throttle rod and to increase the tension of the spring to hold the guidevvay and its load in operative position.

5. In a throttle control and in combination with a rack, a slidevvay therefor, a pedal, a connecting rod connecting between the pedal and slideWay, and a spring to retract said rod and pedal; a sector operated by the connecting rod and adapted to operate the rack, and provided with stops to prevent excessive application of force to the throttle.

In testimony Whereoi'we have hereunto set our hands at Los Angeles, California, this 18th day of June, 1923.

MOSES SCHLATTER. ELMER L. LIPP. 

